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These our actors,
As I foretold you, were all spirits, and
Are melted into air, into thin air,
And, like the baseless fabric of vision,
The cloud-capped towers, the gorgeous palaces,
The solemn temples, the great globe itself,
Yea, all which it inherit, shall dissolve
And, like this insubstantial pageant faded,
Leave not a rack behind. We are such stuff
As dreams are made on, and our little life
Is rounded with sleep.
- (Prospero), William Shakespeare, The Tempest, 4.1